Slicing machine



May 2, 1944.

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SLICING' MACHINE Filed Feb. 10.' 1941 9 Sheeps-Sheet 1 E.; VH1 mw,

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J.' FOlrv-K SLICING MACHINE Filed Feb. 10, 1941 l 9 Sheets-Sheet 5 May2, 1944. J. FQLK sLIcING MACHINE Filed Feb. 1o, 1941,

9 Sheets-Sheet 6 May 2, 1944. J. FOLK sLIcING momma' Filed Feb. 10, 19419 Sheets-Sheet 7 May 2, 1944. FOLK sLIcING LlfAcHINE Filed web;` 1o,1941 l 9 sheets-.Skeet -8 May 2, 1944. J. FOLK SLICING MACHINE med Feb.1o, 1941 9 Sheets-Sheet 9 jizz/e722 Or Ose/U72 F0 l 1/ @QM @i PatentedMay 2, 1944 SLICING MACHINE Joseph Folk, Chicago, Ill., assigner to TheAllbright-Nell Company, Chicago, Ill., a corporation of IllinoisApplication February 10, 1941, Serial No. 378,131 13 claims. (o1.14e-137) The present invention relates generally to slicing machines.`More particularly the invention relates to that type of machine whichis designed primarily for use in a meat packing house or establishment,serves to slice frozen slabs of bacon into slices of uniform thicknessand comprises as its principal parts or elements a supporting structure,a trough on the structure for feeding the slabs to be cut in asuccessive manner and a knife for slicing the slabs into slices as theymove or are fed along the trough.

One object of the invention is to provide a slicing machine of this typewhich is an improvement upon, and has certain advantages over,previously designed bacon slicing machines and not onlyis vmore eicientin operation but also operates to cut the bacon more uniformly andwithout forming or causing so-called strings on the slices. Y

Another object ofthe invention is to provide a bacon slicing machine ofthe type under consideration in which the knife is in the form of astraight plate or bar, is mounted for longitudinal sliding movement onan oscillatory arm at the discharge end of the trough and is socontrolled that it reciprocates in connection with oscillation of thearm.

Another object of the invention is to provide a slicing machine of thelast mentioned character in which the oscillatory arm carries anadjustable gauge platewhich is disposed adjacent the cutting edge of theknife and coacts with the latter to control the thickness of the slices.

Another object of the invention is to provide a bacon slicing machine ofthe type and character under consideration in which the knife and gaugeplate carrying arm are arranged and designed so that at the conclusionof a slicing period it may be swung yfrom a normal operative positionadjacent the discharge end of the trough into an inoperative positionwherein it is disposed at one side of the trough and the knife and gaugeare readily accessible for cleaning.

Another object of the invention is to provide a slicing machine of thelast mentioned character in which the oscillatory arm carries, inaddition to the knife and gauge plate, a deflector plate for the cutslices and also an auxiliary gauge plate which overlies the cutting edgeof the knife and prevents feed of the bacon slab being cut in thedirection of the knife during the cutting stroke of the knife.

Another object of the invention is to provide a bacon slicing machineofthe aforementioned type in which the auxiliary gauge plate, the maingauge plate and the deflector plate are hinged to the oscillatory arm sothat when the latter is swung into its inoperative position at one sideof the discharge end of the trough they may be swung away from the arminto a position wherein they are readily accessible for cleaning.

A further object of the invention is the provision in connection withjabacon slicing machine of the type and character under consideration, ofa novel spring arrangement for balancing the knife carrying arm.4 v

A still further object of the invention is to providea bacon slicingmachine which is generally of new and improvedV construction, may beoperated with safety and in which adjustability of the operating partsiscombined with durability and compactness of design.

Other objects of the invention and the various advantages andcharacteristics of the present slicing machine will be apparent from aconsideration of the following detailed description.

The invention consists in the several novel features which arehereinafter set forth and are more particularly defined by claims at theconclusion hereof.

In the drawings which accompany and form a partv of this specificationor disclosure and in which like numerals of reference denotecorresponding parts throughout the several views:

`Figure 1 is a front perspective of a bacon slicing machine embodyingthe invention; v

Figure 2 is a vertical longitudinal section;

Figure 3 is a transverse section taken on the line 3-3 of Figure 2 andillustrating in detail the arrangement and design of the 'power meansfor oscillating the' knife carrying arm and showing the arrangement ofthe inclined trough and the slab controlling-means which is associatedtherewith;

Figure 4 is a transverse section taken on the line 4 4 of Figure 2 andshowing the design and construction of the plate which is located at thelower end of the inclined trough and forms a part of the supportingstructure of the machine;

Figure 5 is a section taken on the line 5-5 of Figure 2 and showing indetail the construction and design of theoscillatory arm andillustratingthe manner in which the knife is reciprocated in connectionwith oscillation of the arm; Figure l6 is an enlarged longitudinalsection taken onf the line 6 6 of Figure 5 and showing the arrangementand design of the knife, the main gauge plate and the auxiliary gaugeplate;

Figure 7 is -a perspective View showing the knife carrying arm after ithas been swung into Y position wherein it is accessible for cleaning;

Fig. 9 is a perspective view illustrating the arm in its inoperativeposition and showing the main gauge plate vand the auxiliary gauge plateafter they have been released and swung away from the arm so that theyare accessible for cleaning e and the knife'is in a position wherein itmay Y be cleaned as well as ground or otherwise sharpf l ened; Y A

Figure 10 is a section on theline-lrof Figure5;and

Figure 11 is a rear perspective of the machine showing in detail thedesignY and construction of the bacon controlling means on the feedtrough.

The slicing machine which is shown in the drawings constitutes thepreferred form or embodiment of the invention. It is designed for use ina meat packing establishment and serves, as hereinafter described, toslice bacon in the form of frozen slabs. As its main or principal partsthe machine comprises a supporting struce ture I 2, a feed trough I3, anoscillatory knife carrying arm I4, power means |5 for oscillating thearm, a knife It', upperl and lower gauge plates Il and I8 and adeflector plate I9. These parts function or operate as hereinafterdescribed and are so arranged and designed that the machine as a wholeis in the form of a compact unit.

Supporting structure The supporting structure .I2 rconsists of a mainframe 20, a bed plate 2|.and'a plate 22. The frame is adapted to restupon the oor of the meat packing establishment in which the machine isemployed or used; It ispreferably in the form of a casting and embodies`at the top thereof a continuous marginal ange 23. The latter has a flattop face and this is disposed at an angle o f 45 with respect to thehorizontal, as shown'in Figure 2. The bed plate 2| is in the -form of aone-piece casting and embodies a depending marginal flange which restsupon and is bolted or otherwise iixedly secured to the marginal flange23 Yat the top of the frame 2|). The top face oi the bed plateV is atand it also extends at a 45 angle with respect to the horizontal. Theplate 22 is positioned at right angles to, and extendsptransverselylacross. the central portion of, the bed plate 2|.. It is-preferably inthe form of a casting and embodiesa pair of laterally spaced'bottomanges 24, a pair of laterally spaced side flanges 25, a transverselyextending intermediate iiange 26 and Va top viiange 21. These flangesproject or extend in a rearwards direction, that is, toward the upperAend of the bed plate 2|. ,Bolts 28 extend throughthe bottom iianges 24and the subjacent portion of the bed plate 2| and serve to hold theplate 22 in fixed relation with the bed plate. The side flanges 25arepositioned in laterally spaced relation and extend upwards from theinner ends or portions of the bottom flanges 211|.V The intermediateiiangev 25 is joined to, and extends between the lower central portionsof, the side anges and is located above the bottom flanges 25,. The topflange 21 extends between, and is joined to, the upper ends of the twoside flanges 25. A rectangular opening 29 is formed in the centralportion of theplate 22 and this opening is located or positioneddirectlyabove the inter- 75l mediate nange 28. AS hereinafter described, theslabs of bacon to be cut are fed successively through the opening 29 andare sliced by the knife It?A as they pass through the opening. AU-shaped frame 30 is bolted to the front or downwardly facing face ofthe plate 22 and extends around the lower portion of the rectangularopening 29, as shown in Figure 4.

Feed trough The trough I3 serves as the medium for feedving the baconslabs to be cut through the rectangular opening 29 in the plate 22 forslicing by the knife I6. It overlies the upper portion of the bedLplateA 2|and consists of a bottom wall 3| and a side -wall `32. Thebottom wall is downwardly inclined at an angle of It embodies a flattop` face and. isA adapted to have the bacon slabs to be cut slide downit by gravity. The lower or discharge end of the bottom wall 3| of thetrough rests ,upon and is bolted or otherwise xedly secured to theintermediate ange 26 of the plate 22. The rear or upper portion of thebottom wall is supported by way of a bracket 33 which extends between itand the bed plate 2|. The side wall 32 of the trough is joined to, andprojects upwardly from, one of thesldeA margins of the bottom wall 3|.It extends at right angles to the bottom wall and serves as a guidealong which thebacon slabs slide. The trough is downwardly and laterallytilted in the direction of the side wall 32 in order that the slabsgravitate or slide laterally into contact or engagement with the sidewall. A shearing bar 34 is located at the lower edge, and forms acontinuationof the bottom wall k3|'of the trough. This bar is bolted tothe bottom portion vof Vthe U-shaped frame 35. The bottom or lowerportion of this bar constitutes a shearing edge, and the knife I6, ashereinafter described, moves across Vor Y traverses this edge and coactstherewith to effect slicingof the bacon. V'As shown in Figure 6, theshearing edge at the bottom of the shearing bar 34 is upwardly oiisetwith respect to the plane of the top face of the bottom wall 3| of thetrough with the result that the slab'of bacon'which is being cut orsliced by the knife I6 engages the bottom wall of the trough Ionly at`its rear end and hence feeds or slides readily down the trough.

The trough is of sufficient length so that the slabs of bacon to be cutmay be placed thereon in series form for successive gravity feed to theknife. Associated with the trough are three bacon controlling shoes 35,3S and 3T. The shoes 35 and 35 overlie the bottom wall 3| of the troughI3 and serve to urge or hold the slabs in sliding engagement with theside wall 32. Theshoe 35 is disposed overthe lower or discharge end ofthe said bottom wall 3| and is carried for horizontal sliding movementin the direction of the side wall by way of a rod 38. The latter extendsthrough a hole in one of the side anges 25 of the plate 22 and ispositioned in parallel relation with the bottom wall 3| of the trough.VA compression spring-39 serves to urge the shoe 35 in the direction ofthe side wall `32. This spring is applied to, and extends around, ahorizontal axially slidable rod 40 which underlies the intermediateflange 26 or the plate 22 and has one end thereof connected to'the outerend of the rod 33 by'way of an arm 4|. One end of the rod 40 is slidablymounted in a hole in the lower end of one of the side iianges 25 and theother end of the rod is slidably mounted in a hole in a bracket 42 (seeFigure 11). The spring 39 extends between the hole equipped side flangeof the plate 22 and a shoulder forming washer (not shown) on the rod 40and urges the rod together with the rod 38 and the shoe 35 in thedirection of the side wall 32. The shoe 35 is located over the centralportion of the bottom wall 3l of the trough and is mounted forhorizontal sliding movement to and from the side wall 32 by way' of arod 44. The latter isdisposed in parallel relation with the rod 38 forthe shoe 35 and is slidably mounted inv a bracket 45 on the troughbottom wall 3|. The `shoe 36 is urged the direction of the side wall 32by way vof a spiral compression spring which is mounted on ahorizontally extending axially slidablerod 43 and functions similarly tothe spring 39. The rod 45 isV slidably mounted inv the bracket 33 thatsupportsfthe upper or charging end of the trough and is connected to theouter end of the rod 45 by way of an arm 41. The portions of the shoes35and 36 which extend in the direction of the upper end of the troughare angled or inclined awayvfrom the side wall 32 and serve as cammeans. whereby the shoes are urged away from the side wall in connectionwith feed of the slabs l to be cut down the trough. When the trough ischarged with slabs the shoes 35 and 3B urge the slabs against the sidewall 32 of the trough and hence control the feed of the slabs in thedirection of the shearing bar 34. When a bacon slab t be cut is placedon the upper portion of the trough and is then released it slidesdownward until it engages the upper portion ofthe shoe 35 and thenslides downwards past the shoe and against Vthe side wall 32. Thesprings for urging the shoes 35 and 36 towards the side wall are lightlyloaded in order that the shoes do not impede or retard sliding movementof the slabs down the trough. The faces of the shoes that are oppositeto the side wall 32 are longitudinally grooved or flued for frictionreducing purposes. The arms 4l and 41 limit movement of the shoes 35 and36 in the direction of the side wall 32. The shoe 31 overlies theshearing bar 34 and operates to press downwards against the bar thebacon slab that is being subjected to the `slicing action of the knifel5. It is positioned in'parallel relation with the bar and is mountedformovement to and from the bar by way of a pair of laterally spacedupstanding rods 48 and 49. The lower end of the rod 49 extends throughand is slidabli,r mounted inV al hole in a lug supported plate 5G andthe upperV end of the rod extends through and is slidably mounted in ahole in the top flange 21 of the plate22. 'The rod 48 is parallel to therod 49 and is`slidably mounted in a hole in the plate 50. .The shoe 31moves by gravity in the direction of the shearing bar 34 and embodies aseries of laterally spaced springngers 5I on the bot-v tom face thereof.A light compression spring 52 surrounds the rod 48 and is arranged sothat'v it urges the shoe 31 upwards and thus facilitatesv passage of theslabs between the shoe and the The loading of the spring is-` the weightof the shearing bar 34. not'l suflicient to overcome shoe 31 and hencethe shoe, through the medium' of the spring ngers 5i, engages thesubjacent slab with light downward pressure. The lower end of the spring52 abuts against the plate 50 and the upper end of the spring abutsagainst a collar 53 on the rod 48. A second collar 54 at the upperextremity of the vrod 48 coacts with the collar 53'to limit movementy ofthe shoe 31 toi/and from the shearing bar 34. The lower ends of thespring fingers 5l terminate inwardly of the lower portion of the shoe 31and such portion of the shoe directly overlies and is aligned with thelower cutting portion of the bar 34 and is transversely fluted (seeFigure 4) in order to form depending teeth 31a. The latter serve to holdthe bacon slab being cut against lateral displacement while at the sametime they permit the slab to feed downwards across the shearing bar 34without undue frictional retardation. By employing the verticallyslidable shoe 31 it ispossible to obtain continuous feeding of the slabsto the knife. Furthermore, there is no likelihood of the slab being cutmoving with the knife after it has` been substantially completely slicedand there is only a small piece or part remaining.

Also associated with the trough i3 is a follower block 55. This block ismounted to slide lengthwise of the trough and is normally positionedinwards of the trough side wall 32, as shown in Figure 4. It is mountedon a rod 56 and when inuse operates to urge the slab of bacon beingsliced orvcut towards the shearing bar 34. The rod 56 is supportedalongside of and has its lower end mounted in a socketed boss 56a on theplate 22 ofthe supporting structure l2. The block 55 embodies at theouter portion thereof a sleeve 51 which fits loosely around the rod 5B.The sleeve and rod guide the block for rectilinear sliding movement. Thesleeve is so designed or arranged that it permits the block to be swungto one side of ther trough when it is not in use. Theblock embodies ahandle 58 and a fork 59. The fork is adapted, in connection with certainusev of the block, to penetrate the subjacent slab of bacon and when inpenetrating or operative position it serves to connect the block to theslab. The handle 58 permits the block to be raised or otherwisemanipulated by the operator of y,the machine. In using the block theblock is moved upwards manually and is then swung into forked relationwith a bacon slab on the troughl As soon as the block is released itslides downwards together with the slab and assists gravity feed of theslab toward the4 knife I6. The sleeve 51 coacts with the socketed boss55a on the plate 22 to limit downward movement of the follower block 55.At the end of downward movement of the block the sleeve 51 strikesagainst said side ange and thus arrests the block and prevents anyfurther feed of the impaled slab past the shearing bar 34. In the eventthat there are two more slabs of bacon on the trough i3 and the operatordesires to slice but one slab the follower block 55 is-swung over thetrough and is positioned in such manner that the fork 59 is disposedbetween the abutting ends of the lowermost and next lowermost slabs. Assoon as the block slides downwards to its fullest extent it arrestsfurther feed movement of the uncut slabs while at the same time itpermits a full or unrestricted feed of the slab being cut.

- Kmfe carrying arm bers, as bestshown in Figure 1, are arranged inlaterallyfs'paced relation and are parallel to `one another. The arm I4ispivotally mountedby wayof a pivot pin 6i which is carried by a pair oflaterally spaced ears 62: onthe bed plate 2l of the supporting structureI2 and extends through aligned orcoaxial holes in the members E of thearm. The ears are locatedat one side of the bed plate and carry the pinso that it extends at a 45 angle with respect to the horizontal. Whenthe arm isV in its normal or operative position the distal endY thereofextends across the rectangular opening 29 in the plate 22 (see Figures1, 2, 5 and 6). As hereinafter described, the` power means is adaptedduring drive thereof and while the arm I4 is in its operative positionrapidly to oscillate the arm. When the machine is not in use the arm maybe swung from its normaloperative position into an in-V operativeposition wherein it is disposed at one side of the bed plate ZI of thesupporting structure, as shown in. Figures 7, Sand 9. ln order tobalance the arm and thus reduce the power input an elongated helicaltype tension spring 63 is provided. This spring underlies-the armmembers 6i] when the arm is in its operative position and has one endthereof anchored to a bracket 64. The other end of the spring is an-Ychored to a lug 65 which extends between, and is secured to, the armmembers 60. As shown in Figure 5, the lug 65 projects radially withrespect to the pivotpinfl and extends at right anglesl to thev arm. Whenthe arm is inits operative position the lug 65 faces or extendsdownward.` The bracket 64 is connected by a bolt and slot connection 66to the lower portion of the bed plate 2l in orderthat itmay be shiftedto effect adjustment of the tension spring.Y The spring is` preferablysotensioned that it truly balances the knife carrying arm I4. When the armis swung into its inoperative position at one side of the bed plate thelug 65 swings throughoutan arc of substantially 180 into a positionwherein it projects upwards. In suchposition the spring serves to,counterbalance the arm. Due to the specic arrangement of the lug thetension spring 63 facilitates movement or swinging of the arm into itsinoperative position. In order to prevent the distal end of the I4 fromwobbling vor moving laterally in connectionwith oscillation. of th'earrnav shoe 67 and a pair of guide platesv are provided. The shoe 61. ismounted on, and fixed to, the distal end of the arm I4 and has flatsides, as shown in Figure 5. The guide plates 68 are positioned inlaterally spacedrelation and extend upwards. They have flat inner guidesurfaces and are bolted or otherwise xedly secured to the plate 22 ofthe supporting structure I2. The shoe is adapted to slide-between theinner flat guide surfaces of the guide plates in connection withoscillation of the arm. When the arm is swung into its inoperativeposition the. shoe slides out of engagement with the plates.

Arm oscillating means The means I5 for Voscillating the arm while thelatter is in its operative position comprises an electric motor 69, acrank shaft 'IIIVand a connecting rod 'II. The motor 69 is locatedat-one side of the trough' I3 andpis fixed to the rear or upper portionof the bed plate 2l. It is connected to, and operates to drive, thecrank shaft lll by way of a belt and pulley connection 12. Ijhe latterconsists ofa pulley 'I3 on one end of f by way of when the arm thearmature. shaftof the motor, a pulley 'I4 on the crank shaft,` and anendless belt 15 around the two pulleys. The. crank shaft is positionedin parallel relation with the armature shaft of the motor and both ofthese shafts extend at an angle of 45 with respect to the horizontal.Said crank shaft is journalled in suitable bearing brackets on the bedplate of the supporting structure and embodies at its lower end a crank16. The connecting rod 'II is positioned in an upstanding manner and hasthe lower end thereof pivotally connected tothe crank 76. The upperendof the rod is provided with a circular hole 'II and is pivotallyconnected to the upper inner portions of the arm members 60 by a pvotrpin '13. The latter is arranged in parallel relation with the pivot pin6I, as shown in Figure 1, and extends through aligned holes in themembers 60. One end of the. pin is provided with a handle 79 and theother end of the pin lits within the hole 'I'I in the upper end of theconnecting rod 1I. A cotter pin 89 extends through the outer extremityof the pin 'I8 and serves when in place to hold the pin from axialdisplacement. When the cotter pin is removed the pin '18 may be slidaxially out of the hole 'I'l in order to free the arm from theconnecting rod and thus permit it to be swung into its inoperativeposition. The handle I9 enables the operator for the machine readily toremove the pin 'I8 upon release or withdrawal of the cotter pin. Whenthe connectingrod II is connected to the arm by way of the pin 'I3 andthe motor 69 is in operation the motor operates through the medium ofthe belt and pulley connection 12 to drive the crank shaft I0 and thelatter in turn operates through the medium of the connecting rod tooscillate the knife carrying arm I4.

Slz'cing knife The knife IS constitutes the cutting or slicing medium ofthe machine. It is in the form of a straight elongated blade and iscarried for longitudinal sliding movement by means of a shaft 8|. Thelatter underlies and extends parallel to the oscillatory arm vI4 andembodies a lug equipped sleeve 82 on its central portion. The outer endof the shaftl is slidably mounted in a bearing B3 on the distal end ofthe arm I4. The other or inner end of the shaft is slidably mounted in abearing 84 which is located between the inner portions of the laterallyspaced members 69 of the arm. The sleeve 82 is pinned, keyed orotherwise i'lxedly secured to the shaft and is located adjacent therectangular opening 29 in the plate 22 of the supporting structure I4 isin its operative position. I6 is secured to the lug of the sleeve screws85 and extends parallel to the shaft. It embodies along the bottomportion thereof a cutting edge 86 and this edge, as shown in Figure 6,is substantially coplanar with the cutting edge of the bar 34 and coactswith the last mentioned edge during oscillation of the arm I4 to effectslicing of the slabs of 'bacon on the trough I3. When the arm isoscillated the knife I6 moves up and down past the shearing bar 34 andslices the bacon slabs as the latter move successively through theopening 29 in the plate 22. The slicing occurs on the down stroke of theknife andthe bacon is fed downwards on the upstroke of the knife. Thecutting edge 86 of the knife extends truly radially with respect to theaxis or center of the pivot pin 6I and is so arranged with respect tothe shear- The knife ing bar 34 that it is parallel to the edge of thebar at the instant that it passes the shearing edge of the Vbar on thedown stroke of the arm I4. Due to the parallel arrangement of thecutting edge 86 and the shearing ed-ge of the bar 34 at the instant theformer passes the latter the bottom portion of the bacon slab being cutor sliced is uniformly or completely severed at a certain point duringthe down stroke of the l knife. In other Words, due to theaforementioned parallel arrangement the entire bottom edge of each sliceis severed from the slab being cut at the instant the cutting edge ofthe knife passes into lapped relation with the shearing edge of the bar34. A link 81 serves to reciprocate the knife during oscillation thereofby the arm I4. One end of thisllink is pivotally connected to the outerend of the shaft 8| by way of a yoke 88 and a pivot pin 89. The yoke 88is formed as an integral part of said one end of the link and straddlesthe outer end of the shaft. The pivot pin 89 is carried by the yoke andextends through a transverse hole in said outer end of the shaft. Theother end of the link 81 embodies a circular hole through which a pivotpin 90 extends. A .pair of laterally spaced collars 9| and 92 on thecentral portion of the pivot pin 90 serve to hold the pin against axialdisplacement with respect to the link 81. One end of the pivot pin isadapted to iit within a U-shaped member 93 on a bracket 94 and has athreaded stem 95 on which are mounted a washer 98 and Va nut 91. Thebracket 94-is bolted to the top flange 21 of the plate 22, as shown inFigure l. Said one end of the pivot pin 90 is adapted to be clampedwithin the U- shaped member 93 by way of the nut 91. When the pivot pinis in place in the member 93 and the nut 91 is tightened the U-shapedmember is clamped between the collar 9| and the washer 95 and there isaA fixed or rigid connection between the pin and the bracket.l The link81 extends upwardly and inwardly from the outer end of the knifecarrying shaft 8| When the pin 90 is in fixed relation with the bracket94 and the arm i4 is oscillated the link 81 operates on the up stroke ofthe arm to slide the shaft and knife in one direction and onthe downstroke of the arm to slide the shaft and knife in the oppositedirection. 'Ihe arrangement of the link is such that the knife is causedto move inwards, that is, in the direction ofthe pivot pin BI for 'thearm I4 on the down stroke of the arm and is caused to move outwards,that is, in the oppo- Y site direction, on the up stroke of the arm. yIn

connection with swinging of the arm I4 into its inoperative position thepin 90 is released from the U-shaped member 93 on the bracket 94 byloosening the nut 91. As soon as the nut is loosened the pin is free sothat it may be swung out of seated relation with the member 93. The link81 together with the pivot pin 90 and the lbracket 94 constitutes simplemeans for effecting reciprocation of the knife in connection withoscillation of the arm I4, Y i

In order to support the link 81 and hold it against movement whenthe-arm I4 is in its inoperative position a supporting bracket 98 isprovided. This bracket is formed as a part of, and extends upwardlyfrom', the distal end of the main oscillatory arm I4. It is disposedinwardly of the bearing 83 and has in the upper portion thereof an opentop seat 99 for the other end of the pivot pin 90, that isfthe end thatis remote from the'nut carrying threaded stem 91. Said other end of thepivot pin embodies a threaded stem |00 on which are mounted a nut Il anda washer |02. When said other end of the pivot pin is disposed in theseat 99 and the nut |0| is tightened the bracket 98 is clamped betweenthe washer |82 and the collar 92 and the pin is thus held in rigid orfixed relation with the bracket. When itis desired to swing the knifecarrying arm into its inoperative position the pulley i4 is turnedmanually until the arm I4 is' swung upwards avsufcient distance to causethe pivot pin to seat within the seat 99. Thereafter the nut |0| `istightened so as to lock the pivot pin to the bracket 98. As soon as thepivot pin is locked tothe bracket the nut 96 is loosened so as to freethe upper end of the pivot pin from the' U-shaped member 93 on thebracket 94. After loosening of the nut 96 and upon removal of the pivotpin 18 the arm I4 is so freed thatit may be swung bodily into itsinoperative position. When the arm is in its inoperative position andthe link 81 is locked to the arm by way of the pivot pin 90 and thebracket 98, the knife is locked against sliding movement with respect tothe arm and hence may be readily sharpened. Under normal operatingconditions the pivot pin 90 is clamped to the bracket 94 and isdisconnected from the bracket 98. Should it be desired to lock the armI4 to the supporting structure when the machine is not in use the pivotpin 90 is connected to the bracket 98 while it is in connected relationwith the bracket 94. The bracket 98 and the pivot pin 90 constitutesimple means for locking the link 81 and the knife to the arm when thearm is in its operative position. They further constitute means forlocking the arm I4 to the supporting structure when the machine is notin use. Should an attempt be made to start the machine while the arm I4is locked to the supporting structure through the medium of the brackets94 and 98 and the Vpivot pin 90 the current to the electric motor 89 isautomatically cut oif due to break or rupture of the usual fuse in themotor circuit.

Theknife carrying shaft 8| is held against turning or rotative movement`during normal operation of the machine by way of an upstanding arm |03which is disposed between the laterally spaced members 90 of the mainarm I4 and has its lower end connected to the inner end of the shaft 0|by way of a split collar |04. A bolt |05' ...serves to'contract thecollar |04 into clamped relation with the shaft 8|. The upper end of thearm |03 is provided with a shoe |09 and this shoe is disposed andslidable between a pair of laterally spaced parallel guide .plates |01on the vupper portions of the members 60. When the shaft 8| isreciprocated in connection with a slicing operation the shoe |06 slidesback and forth between the plates |01. By reason of the lfact that theshoe |05 is held by the guide plates 4against lateral displacement theknife carrying shaft 8| is precluded fromturning during normal operationof the machine. The shaft may however be rotatively adjusted in order tobring the cutting edge 8.6 of the knife I6 into proper relation with thecutting edge of the bar 84. To effect rotative adjustmentl of the knife'it is only necessary to release the bolt |05 and then turn the shaft 8|relatively to the split collar |04.

.After proper Yrotative adjustment of the knife the bolt |05i'stightened in order rigidly to conneet the shaft to the shoe carryingarmV I 03. The

-collarequipped arm I03,the shoe/|00 and the Vguide plates |01constitute simplel means for pre- .to feed downwards into a portionoverhangs the shearing bar 34 and is in `is connected -to lthe vfrom theknife in order Y.end of the ann ID3 constitutes simple means forpermitting .rotative .adjustment of the knife.

Upper and 'lower kgauge plates f The vupper gauge plate I'I is in thenature of an `auxiliary gauge plate and overlies the knife I5. AIt is inthe form of a flat plate and is connected to the central .portion ofVthe main knife carrying yarial I4 by way of a pair of hinges IEBS. Thelatter are located at the ends of the gauge plate III and permit theplate to be swung awayfrom vthe arm, I 4 into an open cleaning .positionwhen the arm is in its inoperative position (see Figure 9). Athumb screw|09 serves as a Vmedium for releasably locking the gauge .plate I l inits normal oroperative position. This screw extends through a lug I I9on the central portionof the arm land when tightened bears against theupper margin of the gauge plate and clamps such: plate in its operativeor normal position. When the screw |09 is released or loosened the plateI'I is released and hence may be swung away from the arm I4 for cleaningpurposes, as hereinbefore described. When the machine is in use thebottom margin of the plate AI'I terminatesimmediately above the cuttingedge 86 of -the knife I6 and serves as a stop Wherebyfeed ,of the baconslab being cut is prevented during the down or cutting stroke of thelknife. The plate I 'I is located on the side of the arm I 4 that is.opposite the bottom face of the 'plate 22 of the supportingstructurei'Z. `It is lrectangular 'as far as the contour or shape isconcerned and is approximately the same `size as -the opening. 29. `inthe y.plate 22. The-bottom edge o.f"the.plate .Il'is 'bevelled, as shownVin Figures 2 and'. On the down stroke of the arm I the gauge plate vI1engages and moves downwards past the sliced face of the bacon slab -thatiS being cut and in this manner .prevents down- ;ward feed-of the slab.On the up stroke 'of the Aarm I4 the gauge :plate I1 Vand the knife I5move upwards .pastthe slab and hence permit the slab position wherein areadiness for slicing.

The lower gauge .plate i8 is located directly beneath the cutting edge86 ofthe knife I6 and central portion of the main knife carrying arm IIIby way o-f a pair of hinges VIII. The latterare disposed outwards of thehinges m8 and permit the gauge plate I8 to be swung away from the arm I4into a cleaning position when the arm is `in its inoperative position.As shown in Figure 6, the gauge plate I8 is laterally oiset with respectto the knife I6. On the up stroke .of the arm I4 the plate I8 movesupwards past the shearing bar 34. soon as the knife moves out of contactwith the slab being cut in connection with the up stroke of the arm `theslab. moves downwards until it strikes against the gauge .plate E8. Thedepth of cut, that is, the thickness ofthe slices, is

.determined by the amount of offset of the gauge plate with respect tothe knife. By reason of the fact that the plate IB is connected to thearm by hinges III the plate may be moved or adjusted in a lateraldirection towards or away to vary the thickness ofthe slices. lFor thepurpose of adjusting the lower'gauge plate I8 a pail of screws II2 isprovided. `These screws extend through inter- ;nally threaded bushings II3 in the central por.-y

kLA

tion of the knife carrying arm I4. lAs shown irl. Figure .6, thebushings I1I3yextend at an ang-le of v45" with .respect to. thehorizontal andare suitably held against axial displacement.H The upperends of the screwsproj'ect past the upper ends of the bushings and bearor abut against the central portions of the lhinges-I I I. The lowerends of thefscrews `project-beyond the lower ends of the bushings andareprovidedjwith knurled heads I M .in order that the screws may-beturned. When the Vscrews are turned-so that they move upwards the gaugeplate I8 fis caused to move toward the knife IB. When the gauge plateisin close proximity to .the knife the slices are extremely thin. When theadjusting screws I I2 .are turned in the opposite directionfso Athatthey move downwards the gauge plateI 8 swings away from the knife I6andlhence .coactsl with the knife to form thick slices. The twoadjusting screws are connected together for conjoint rotation by Way ofa rack II5 and a pair of pinions IIS. The rack extends lengthwise of thearm I .and is mounted for longitudinal sliding movement by -way of Aapair of brackets III. These brackets are secured to the arm. I4 byscrews H8. The pinions IIS are fixed to the lower ends of the adjustingscrews and mesh with the teeth of the rack. When the gauge plates II andI3 are in their operative position the hinges III are held in contactwith the upper ends of the adjusting screws by way of spring pressedplungers IIS. kThese plungers are mounted in sockets in the hinges |08and bear against transversely extending pins |20 on the central portionsof the hinges I I I. For the purposes of ascertaining the depth of cut,that is, the thickness of the slices, a gauge I2I is provided. Thisgauge consists ofA a pointer |22 on the rack H5, and a scale I-23 on thearm I4.

Deflector plate The deflector plate I9 is positioned adjacent the bottomface of the knife I6 and serves to strip the slices from the knife anddirect them downwards onto a. ribbon conveyor C. The latter consists ofa frame c anda plurality of endless laterally spaced sheave or'rollersupported Yribbons c1. The .receiving end of the conveyor isdisposeddirectly beneath the shearing bar 34, `as best shown in Figure6. It is vertically adjustable 4to and from the shearing bar by way of arotatable lupstanding Yscrew-type rod c2. The upper end of this rod fitswithin an internally vthreaded socket .in the frame (see vFigure V2).When therod jis turned or rotated in one .direction .the receiving 1endof -the conveyor is elevated whereas when the rod is reversely rotatedthe conveyor 4is caused to move downwards. A lock nut c3 serves to lockthe rod in its various ad- .justed positions.` The upper reaches oftheendless ribbons clof the conveyor are straight or flat, as showninFigure l. The deector plate I9 is connected to the central portion ofthe knife carrying arm t4 by way off'hinges |24 so that when the arm isin its inoperative position it may be swung outwards for cleaningpurposes (see VFigure 8). Atthumb screw I-25'extends through a I4 andoperates releasably to clamp'the deector plate I9 in its operativejposition. The lug -I26 is formed as an integral part `lof the arm -I4`and is disposed between the hinges |24. The screw is adapted whentightened to "bear against the centralportion of the plate and whentightened to its fullestextent clamps the ideector plate in jplace.Wghen the screw I25fis 'cutting edge loosened the plate is released andhence may be then swung away from the arm I4. The upper or proximalportion of the deflector plate is parallel with the upper gauge plate I1when the deflector plate is in its normal position. The lower or otherportion of the plate extends inwards at an acute angle and is positionedin close proximity to the lug equippedrknife carrying sleeve 82. Thebottom margin of the deiiector plate is bevelled, as shown in Figure 6and is positioned in substantially contacting relation with the underside of the knife I6 and in close proximity to the cutting edge 86 ofthe knife. On the down or cutting stroke of the knife the slice as it issevered from the slab of bacon being cut engages the bevelled lowermargin of the deflector plate and is deflected by such margin downwardsonto the receiving end of the endless conveyor C. It is contemplatedthat the endless conveyor be driven during operation of the machine. Asthe endless conveyor is Vdriven the slices are deiiected onto the upperreach of the conveyor in shingled fashion. The portion of the deectorplate I9 which is next to the lower, bevelled, slice-stripping margin isso positioned that at the end of the down stroke of the arm I4 itengages the slices on the receiving end of the conveyor with slightdownward pressure. It is fiat, as shown in Figure 6, and hence operatesto flatten the slices directly after they are deflected onto thereceiving end of the conveyor. The bottom face of the slice attening`portion of the deflector plate is provided with a longitudinal seriesof laterally spaced utes |21 and these serve to reduce any friction ordrag on the slices when the latter are contacted by the fluted portionof the dei'lector plate. The parts of the plate which are disposedbetween the flutes constitute ribs or teeth |28 which are of V-shapedcross section and serve to prevent displacement of the slice being cutin a longitudinal direction with respect to the knife I6. A stop lug |29is secured to the lower face of the fluted portion of the defiectorplate. This lug is substantially aligned with the side wall of thetrough I3 and in conjunction with the teeth |28 operates to prevent theslices from adhering to, and moving with, the knife I6 as they aresevered from the slab being cut. By applying the lug to the deflectorplate the slices of bacon on the conveyor are all aligned with oneanother as far as side edges are concerned.

Operation When it is desired to use the machine a slab of bacon to besliced wall 3| of the trough I3. As soon as the slab is released itmoves downwards by gravity until the lower end strikes against the uppergauge plate I1. The shoes 35 and 36, as hereinbefore described, urge theslab against the trough side wall 32 and the shoe 31 holds the lower endof the slab in firm contact with the shearing bar 34. If it is desiredto use or employ the follower block 55 the latter is swung over thetrough and is urged downwards in order to bring the fork 59 is placed onthe bottom slices the lower end of the slab. During the down stroke theknife not only swings past the slab but also slides longitudinally inthe direction of the pivot pin 6I. Due to the combined swinging andsliding movements of the knife the slab is effectively and efficientlysliced and the slices are free from any so-called strings During eachdown stroke of the knife the resulting slice is into penetratingrelation with the slab. As soon as the slab is in place the electricmotor 69 is started. When current is supplied to the motor the knifecarrying arm I4 is caused to oscillate. On the up stroke of Ythe arm I4the lgauge plate I'I and the knife lo slide out of engagement with thelower end of the slab and the slab moves forwards into abutment plateIB. On the down stroke of the arm I4 the 86 of the knife It penetratesand with the lower gauge stripped from the cutting edge c-f theknife bythe bevelled lower'margin of the deector plate I9 and is directed ordeflected downwards onto the receiving end of the conveyor C. If it isdesired to decrease the thickness of the slices the operator of theVmachine turns the adjusting screws II2 so as to cause them to moveupwards. When the screws are so turned the gauge plate I8 is caused tomove closer to the knife I6. If it is desired to increase the thicknessof the slices the adjusting screws are reversely rotated in order tocause the lower gauge plate I8 to move downwards away from the cuttingedge 86 of the knife. When it is desired to sharpen the cutting edge lofthe knife as well as clean the knife andthe gauge i Afits within theseat 99 at the upper end of the bracket 98. After this operation the nutIBI is tightened so as to clamp the lower end of the pin to the bracket.After tightening of the nut IiII the nut 91 isV loosened so as to freeor release the pin from the bracket 94 on the plate 22 of the supportingstructure I2. At the conclusion of this step the cotter pin 8l) isremoved Lfrom the upper end of the pivo-t pin 18. Thereafter the pivotpin is removed by grasping the handle 'I9 and shifting the pin axiallyin a downward direction. Upon removal of the pivot pin 'I8 the arm I4 isfully or completely released and may be manually swung by the operatorinto its inoperative position. As soon as the arm is in its inoperativeposition the operator releases the screws |99 and |25 and thenswings thegauge and dei-lector plates into their open position. When the platesare in such position the knife IB is accessible for sharpening andcleaning purposes and the plates are so disposed that they may bereadily wiped or otherwise cleaned.

The herein described slicing machine is compact and effectively andeffciently'fullls its intended purpose. It is simple as far as designand construction are concerned and is characterized by the fact that thevarious operating parts are readily accessible for cleaning.

Whereas the machine has been described as being primarily designed oradapted to slice bacon in the form of frozen slabs it is to beunderstood that other meat products or articles may be sliced by themachine. It is also to be understood that the invention is not to berestricted to the details set forth since these may be modified withinthe scope of the appended claims without departing from the spirit andscope of the invention.

Having thus described the invention what I claim as new and desire tosecure by Letters Patent is:

l. A slicing machine comprising in combination a supporting structurehaving a trough associated therewith for feeding the material to besliced, an elongated arm extending transversely .across the dischargeend of the trough and pivotally connected yat one end thereof to thetudinally of the arm supporting structure so that it is capable ofoscillating up and down past said discharge end of the trough, a bartype knife extending longitudinally of the arm and carried by `the armso that it is slidable lengthwise, means for oscillating the arm, andmeans for sliding the knife in one direction during the down stroke ofthe arm and in the opposite direction during the up stroke of the armembodying a link extending normally at an acute angle to the knife andhaving one end thereof pivotally connected to said knife and its otherend connectedto the supporting structure s as yto pivot about a fixedaxis that isy offset with respect to the pivotal connection between thearm and said supporting structure.

2. A slicing machine comprising in combination a supporting structurehaving a trough associated therewith for use in feeding the material tobe sliced, an elongated arm pivotally connected at one end thereof tothe supporting structure so that it may be swung back and forth betweena normal operating position wherein it extends transversely across thedischarge end of the trough and an inoperative position at one side ofthe discharge end of the trough, a bar type knife extendinglongitudinally of the arm andvcarried by the arm so that it is slidablelengthwise, means for oscillating the arm when it is in its operativeposition, and means for sliding the knife back and forth duringoscillation of the arm consisting of a link extending normally at anacute angle to the knife and having one end thereof pivotally connectedto said knife and its other end connected to the supporting structure soas to pivot aboutv ali-lxed axis, that is offset to the pivotalconnection between the arm and the supporting structure, one of thepivots for the link being readily releasable in order that the arm maybe freed for swinging into its inoperative position.

3. A slicing machine comprising in combination a supporting structurehaving a trough associated therewith for use in feeding the material tobe sliced, an elongated arm pivotally connected at one end thereof tothe supporting structure so that it may be swung back and forth fbetween a normal operating positionwherein it extends transverselyacross the discharge end of the trough side of thedischarge end of thetrough, a bar type knife extending longitudinally of the arm and carriedby the arm so that it is slidable lengthwise, means for oscillating thearm when it is in its operative position, means for reciprocating theknife during oscillation of the arm consisting of a link having one endthereof pivotally connected to the knife and its other end connected tothe supporting structure by a releasable pivot in order that it may befreed from said supporting structure in connection with swinging of thearm into its inoperative position, and means for locking the link to thearm when the arm is in its said inoperative position.

4. A slicing machine comprising in combination a supporting structurehaving a trough as-` sociated therewith for feeding the material to besliced, an elongated arm pivotally connected at one end thereof to thesupporting structure Vso that it may be swung back and forth between anormal operating position `wherein it extends transversely across thedischarge end of Vthe trough and an inoperative position at one Vside ofthe trough, a bar type knife extending longiand an inoperative positionat one v and carried by the armso that it is slidable lengthwise, powermeans adapted to oscillare the arm when it is in as operative positionand including a releasable connection between it and the arm whereby thearm may be disconnected or freed for swinging into its inoperativeposition, and means for sliding the knife back and forth duringoscillation of the arm including a link extending between, and pivotallyconnected to, the supporting lstructure and the knife and having one ofthe pivots thereof releasable so as to free the arm for said swinginginto its inoperative position.

5. In a slicing machine of the character described the combination of atrough for feeding the material to be sliced, an elongated rarmextending transversely across the discharge end fof the trough andpivoted at one end thereof so that it is capable of oscillating Vpastrsaid discharge end of the trough, a shaft of circular cross sectionAextending longitudinally of the arm and carried by the arm so that itis slidable axially, a bar type knife xed to, and extendinglongitudinally of, the shaft, means for oscillating the arm, means forsliding the shaft together with the knife back and forth duringoscillation of the arm, and means for preventing turning of the knifeabout its axis during sliding movement thereof consisting of a pair oflaterally spaced guide plates extending longitudinally of, and fixed tothe arm, and an ele- 'ment connected to, and extending radially from,the shaft and having a shoe at its outer end fitting between, andengaging slidably, said plates.

6. A slicing machine comprising in combina- "tion a trough adapted tofeed the material to be sliced and vprovided at its discharge end with ashearing bar, an elongated arm extending transversely across thedischarge end of the trough and pivoted at one end thereof so that it iscapable of oscillating past said one end of the trough, a shaft ofcircular cross section extending lengthwise of the arm and carried bythe arm so that it is axially slidable, a bar type knife extendinglengthwise of, and connected flxedly to, the shaft and adapted inconnection with oscillation of the arm so to coact with the shearing baror to Slice the material as it is fed along the trough, means foroscillating the arm, means for sliding the shaft together with the knifeback and forth during oscillation of the arm, and means for preventingturning of the shaft and knife about the axis of the shaft duringsliding movement resulting from functioning of said sliding meansconsisting of a pair of laterally spaced guide plates extendinglongitudinally of, and fxedto, the arm and an element connected to, `andextending radially from, the shaft and havving its outer end fittingbetween said plates, said element being releasably and adjustablyconnected to the shaft so that the shaft may be roltatively adjustedabout the axis thereof in order properly to position the knife withrespect to 'said bar.

l7. A slicing machine comprising in vcombination a supporting structurehaving a trough associated therewith for feeding the material to besliced, an elongated arm pivotally connected at one end 'thereof to thesupporting structure so that it may be swung up and down 'between avnormal operating position wherein it extends transversely across thedischarge end of the trough and an inoperative position at one side ofthev trough, and provided at said one end thereof with a radially oroutwardly 'extending arm arranged so that it projects downwards when thearm is in its operative position, a slicing knife carried by the arm,power means adapted to oscillate the arm when it is in its saidoperative position and including a readily releasable or detachableconnection between it and the arm whereby the arm may be disconnected orfreed for swinging into its inoperative position, and an elongatedhelical type tension spring disposed beneath, and extending lengthwiseof, said one end of the arm, having one end thereof anchored to thesupporting structure and its other end connected to the outer end of theear, and serving to balance the arm when it is in its operative positionand also to urge the arm into its inoperative position upon release ofthe releasable connection.

8. A slicing machine comprising in combination a supporting structurehaving associated therewith a trough for feeding the material to besliced, an elongated arm pivotally connected at one end thereof to thesupporting structure so that it may be swung back and forth between anormal operating position wherein it extends transversely across thedischarge end of the trough and an inoperative position at one side ofthe trough, a bar type slicing knife carried by, and extendinglongitudinally of, the arm, a gauge plate adapted to coact with theknife to control the depth of out, hinged to the arm so that when thelatter is in its inoperative position it may be swung at right angles tothe plane of the knife into an open position for cleaning purposes, andhaving associated therewith readily releasable means for securing it inits normal or operative position, and means for oscillating the arm whenit is in its said operative position.

9. A slicing machine comprising in combination a supporting structurehaving associated therewith a trough for feeding the material to besliced, an elongated arm pivotally connected at one end thereof to thesupporting structure so that it may be swung back and forth between anormal operating position wherein it extends transversely across thedischarge end of the trough and an inoperative position at one side ofthe trough, a bar type slicing knife carried by, and extendinglongitudinally of the arm, a pair of gauge plates positioned one abovethe knife and one beneath the knife, hinged to the arm so that when thelatter is in its inoperative position they may be swung at right anglesto the plane of the knife into an open position for cleaning purposes,and having associated therewith readily releasable means for securingthem in their normal or operative position, and means for oscillatingthe arm when it is in its operative position.

10. A slicing machine comprising in combination a supporting structurehaving associated therewith a trough for feeding the material to besliced, an elongated arm pivotally connected at one end thereof to thesupporting structure so that it may be swung back and forth between anormal operating position wherein it extends transversely across thedischarge end of the trough and an inoperative position at one side ofthe trough, a bar type slicing knife carried by, and extendinglongitudinally of, the arm, a

def-lector plate on said arm adjacent the back face of the knife hingedto the arm so that when the latter is in its inoperative position it maybe swung at right angles to the plane of the knife into an open positionfor cleaning purposes, and having associated therewith readilyreleasable means for securing it in its normal or operative position,and means for oscillating the arm when it is in its operative position.

1l. A slicing machine comprising in combination a supporting structurehaving associated therewith a trough for feeding the material to besliced, an elongated arm pivotally connected at one end thereof to thesupporting structure so that it may be swung back and forth between anormal operating position wherein it extends transversely across thedischarge end of the trough and an inoperative position at one side ofthe trough, a slicing knife carried by the arm, a pair of gauge platesIpositioned one above and one beneath the knife and hinged to one sideof the arm so that when the latter is in its inoperative position theymay be swung into an open position for cleaning purposes, a defiectorplate positioned adjacent the back face of the knife and hinged to theother side of the arm so that it may be swung into an open position whenthe arm is in its said inoperative position, and means for oscillatingthe arm when it is in its operative position.

12. A slicing machine comprising in combination a supporting structurehaving a trough associated therewith for use in feeding the material tobe sliced, an elongated arm extending transversely across the dischargeend of the trough and ipivoted at one end thereof to the supportingstructure so that it is capable of oscillating past said discharge endof the trough, a bar type knife extending longitudinally of the arm andcarried by the arm so that it is slidable lengthwise, power means foroscillating the arm, means for sliding the knife back and forth duringoscillation of the arm consisting of a link having a pivot between oneend thereof and the knife and a pivot between its other end and thesupporting structure, and means for releasably locking the arm to thesecond mentioned pivot when the machine is not in use.

13. A slicing machine comprising in combination a supporting structurehaving a bracket mounted thereon, a trough associated with the structurefor use in feeding the material to be sliced, an elongated arm providedwith a bracket and connected pivotally at one end thereof to thesupporting structure so that it may be swung back and forth between anormal operating position wherein it extends transversely across thedischarge end of the trough and an inoperative position at one side ofthe trough, a bar type knife extending longitudinally of the arm andcarried by the latter so that it is slidable lengthwise, means foroscillating the arm when it is in its operative position, and a knifecontrolling link having one end thereof pivotallyv connected to theknife and embodying at its other end a pvot pin connectable to either ofsaid brackets or both.

JOSEPH FOLK.

